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2 changed files with 145 additions and 196 deletions

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tab_spaces = 2
use_field_init_shorthand = true

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use actix_web::{ use actix_web::{
get, get,
http::header, http::header,
web::{Data, Query}, web::{Data, Query},
App, HttpResponse, HttpServer, Responder, App, HttpResponse, HttpServer, Responder,
}; };
use handlebars::Handlebars; use handlebars::Handlebars;
use hotwatch::{Event, Hotwatch}; use hotwatch::{Event, Hotwatch};
use serde::Deserialize; use serde::Deserialize;
use std::collections::{BTreeMap, HashMap}; use std::collections::{BTreeMap, HashMap};
use std::error::Error;
use std::fmt;
use std::fs::{File, OpenOptions}; use std::fs::{File, OpenOptions};
use std::io::Write; use std::io::{Error, Write};
use std::sync::{Arc, RwLock}; use std::sync::{Arc, RwLock};
use std::time::Duration; use std::time::Duration;
static DEFAULT_CONFIG: &[u8] = include_bytes!("../bunbun.default.toml"); static DEFAULT_CONFIG: &[u8] = include_bytes!("../bunbun.default.toml");
static CONFIG_FILE: &str = "bunbun.toml"; static CONFIG_FILE: &str = "bunbun.toml";
#[derive(Debug)]
enum BunBunError {
IoError(std::io::Error),
ParseError(serde_yaml::Error),
WatchError(hotwatch::Error),
}
impl fmt::Display for BunBunError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
BunBunError::IoError(e) => e.fmt(f),
BunBunError::ParseError(e) => e.fmt(f),
BunBunError::WatchError(e) => e.fmt(f),
}
}
}
impl Error for BunBunError {}
macro_rules! from_error {
($from:ty, $to:ident) => {
impl From<$from> for BunBunError {
fn from(e: $from) -> Self {
BunBunError::$to(e)
}
}
};
}
from_error!(std::io::Error, IoError);
from_error!(serde_yaml::Error, ParseError);
from_error!(hotwatch::Error, WatchError);
#[get("/ls")] #[get("/ls")]
fn list(data: Data<Arc<RwLock<State>>>) -> impl Responder { fn list(data: Data<Arc<RwLock<State>>>) -> impl Responder {
let data = data.read().unwrap(); let data = data.read().unwrap();
HttpResponse::Ok().body(data.renderer.render("list", &data.routes).unwrap()) HttpResponse::Ok().body(data.renderer.render("list", &data.routes).unwrap())
} }
#[derive(Deserialize)] #[derive(Deserialize)]
struct SearchQuery { struct SearchQuery {
to: String, to: String,
} }
#[get("/hop")] #[get("/hop")]
fn hop(data: Data<Arc<RwLock<State>>>, query: Query<SearchQuery>) -> impl Responder { fn hop(data: Data<Arc<RwLock<State>>>, query: Query<SearchQuery>) -> impl Responder {
let data = data.read().unwrap(); let data = data.read().unwrap();
let mut raw_args = query.to.split_ascii_whitespace(); let mut raw_args = query.to.split_ascii_whitespace();
let command = raw_args.next(); let command = raw_args.next();
if command.is_none() { if command.is_none() {
return HttpResponse::NotFound().body("not found"); return HttpResponse::NotFound().body("not found");
}
// Reform args into url-safe string (probably want to go thru an actual parser)
let mut args = String::new();
if let Some(first_arg) = raw_args.next() {
args.push_str(first_arg);
for arg in raw_args {
args.push_str("+");
args.push_str(arg);
} }
}
let mut template_args = HashMap::new(); // Reform args into url-safe string (probably want to go thru an actual parser)
template_args.insert("query", args); let mut args = String::new();
if let Some(first_arg) = raw_args.next() {
args.push_str(first_arg);
for arg in raw_args {
args.push_str("+");
args.push_str(arg);
}
}
match data.routes.get(command.unwrap()) { let mut template_args = HashMap::new();
Some(template) => HttpResponse::Found() template_args.insert("query", args);
.header(
header::LOCATION, match data.routes.get(command.unwrap()) {
data Some(template) => HttpResponse::Found()
.renderer .header(
.render_template(template, &template_args) header::LOCATION,
.unwrap(), data.renderer
) .render_template(template, &template_args)
.finish(), .unwrap(),
None => match &data.default_route { )
Some(route) => { .finish(),
template_args.insert( None => match &data.default_route {
"query", Some(route) => {
format!( template_args.insert(
"{}+{}", "query",
command.unwrap(), format!(
template_args.get("query").unwrap() "{}+{}",
), command.unwrap(),
); template_args.get("query").unwrap()
HttpResponse::Found() ),
.header( );
header::LOCATION, HttpResponse::Found()
data .header(
.renderer header::LOCATION,
.render_template(data.routes.get(route).unwrap(), &template_args) data.renderer
.unwrap(), .render_template(data.routes.get(route).unwrap(), &template_args)
) .unwrap(),
.finish() )
} .finish()
None => HttpResponse::NotFound().body("not found"), }
}, None => HttpResponse::NotFound().body("not found"),
} },
}
} }
#[get("/")] #[get("/")]
fn index(data: Data<Arc<RwLock<State>>>) -> impl Responder { fn index(data: Data<Arc<RwLock<State>>>) -> impl Responder {
let data = data.read().unwrap(); let data = data.read().unwrap();
let mut template_args = HashMap::new(); let mut template_args = HashMap::new();
template_args.insert("hostname", &data.public_address); template_args.insert("hostname", &data.public_address);
HttpResponse::Ok().body(data.renderer.render("index", &template_args).unwrap()) HttpResponse::Ok().body(data.renderer.render("index", &template_args).unwrap())
} }
#[get("/bunbunsearch.xml")] #[get("/bunbunsearch.xml")]
fn opensearch(data: Data<Arc<RwLock<State>>>) -> impl Responder { fn opensearch(data: Data<Arc<RwLock<State>>>) -> impl Responder {
let data = data.read().unwrap(); let data = data.read().unwrap();
let mut template_args = HashMap::new(); let mut template_args = HashMap::new();
template_args.insert("hostname", &data.public_address); template_args.insert("hostname", &data.public_address);
HttpResponse::Ok() HttpResponse::Ok()
.header( .header(
header::CONTENT_TYPE, header::CONTENT_TYPE,
"application/opensearchdescription+xml", "application/opensearchdescription+xml",
) )
.body(data.renderer.render("opensearch", &template_args).unwrap()) .body(data.renderer.render("opensearch", &template_args).unwrap())
} }
#[derive(Deserialize)] #[derive(Deserialize)]
struct Config { struct Config {
bind_address: String, bind_address: String,
public_address: String, public_address: String,
default_route: Option<String>, default_route: Option<String>,
routes: BTreeMap<String, String>, routes: BTreeMap<String, String>,
} }
struct State { struct State {
public_address: String, public_address: String,
default_route: Option<String>, default_route: Option<String>,
routes: BTreeMap<String, String>, routes: BTreeMap<String, String>,
renderer: Handlebars, renderer: Handlebars,
} }
fn main() -> Result<(), BunBunError> { fn main() -> Result<(), Error> {
let conf = read_config(CONFIG_FILE)?; let config_file = match File::open(CONFIG_FILE) {
let renderer = compile_templates(); Ok(file) => file,
let state = Arc::from(RwLock::new(State { Err(_) => {
public_address: conf.public_address, eprintln!("Unable to find a {} file. Creating default!", CONFIG_FILE);
default_route: conf.default_route, let mut fd = OpenOptions::new()
routes: conf.routes, .write(true)
renderer, .create_new(true)
})); .open(CONFIG_FILE)
let state_ref = state.clone(); .expect("Unable to write to directory!");
fd.write_all(DEFAULT_CONFIG)?;
let mut watch = Hotwatch::new_with_custom_delay(Duration::from_millis(500))?; File::open(CONFIG_FILE)?
watch.watch(CONFIG_FILE, move |e: Event| {
if let Event::Write(_) = e {
let mut state = state.write().unwrap();
match read_config(CONFIG_FILE) {
Ok(conf) => {
state.public_address = conf.public_address;
state.default_route = conf.default_route;
state.routes = conf.routes;
} }
Err(e) => eprintln!("Config is malformed: {}", e), };
}
}
})?;
HttpServer::new(move || { let renderer = compile_templates();
App::new() let conf: Config = serde_yaml::from_reader(config_file).unwrap();
.data(state_ref.clone()) let state = Arc::from(RwLock::new(State {
.service(hop) public_address: conf.public_address,
.service(list) default_route: conf.default_route,
.service(index) routes: conf.routes,
.service(opensearch) renderer: renderer,
}) }));
.bind(&conf.bind_address)? let state_ref = state.clone();
.run()?;
Ok(()) let mut watch =
} Hotwatch::new_with_custom_delay(Duration::from_millis(500)).expect("Failed to init watch");
fn read_config(config_file_path: &str) -> Result<Config, BunBunError> { watch
let config_file = match File::open(config_file_path) { .watch(CONFIG_FILE, move |e: Event| {
Ok(file) => file, if let Event::Write(_) = e {
Err(_) => { let config_file = File::open(CONFIG_FILE).unwrap();
eprintln!( let conf: Config = serde_yaml::from_reader(config_file).unwrap();
"Unable to find a {} file. Creating default!", let state = state.clone();
config_file_path let mut state = state.write().unwrap();
); state.public_address = conf.public_address;
let mut fd = OpenOptions::new() state.default_route = conf.default_route;
.write(true) state.routes = conf.routes;
.create_new(true) }
.open(config_file_path) })
.expect("Unable to write to directory!"); .expect("failed to watch");
fd.write_all(DEFAULT_CONFIG)?;
File::open(config_file_path)? HttpServer::new(move || {
} App::new()
}; .data(state_ref.clone())
Ok(serde_yaml::from_reader(config_file)?) .service(hop)
.service(list)
.service(index)
.service(opensearch)
})
.bind(&conf.bind_address)?
.run()
} }
fn compile_templates() -> Handlebars { fn compile_templates() -> Handlebars {
let mut handlebars = Handlebars::new(); let mut handlebars = Handlebars::new();
handlebars
macro_rules! register_template { .register_template_string(
( $( $template:expr ),* ) => { "index",
$( String::from_utf8_lossy(include_bytes!("templates/index.hbs")),
handlebars )
.register_template_string( .unwrap();
$template, handlebars
String::from_utf8_lossy( .register_template_string(
include_bytes!(concat!("templates/", $template, ".hbs"))) "opensearch",
) String::from_utf8_lossy(include_bytes!("templates/bunbunsearch.xml")),
.unwrap(); )
)* .unwrap();
}; handlebars
} .register_template_string(
"list",
register_template!("index", "list"); String::from_utf8_lossy(include_bytes!("templates/list.hbs")),
)
handlebars .unwrap();
.register_template_string( handlebars
"opensearch",
String::from_utf8_lossy(include_bytes!(concat!("templates/", "bunbunsearch.xml"))),
)
.unwrap();
handlebars
} }